This information targetds programmers who want to modify the code and change the list of fields that are listed in the big switch info table, e.g., to add a new field in there.
To modify the view of big switch info table, you must edit the the flow_rule_table.json in [nfg/flow_rule_table.json]. This is an configuration file where you can add or remove columns of big switch info table. This file fallows the [nfg/nffg_library/schema.json] file, to visualize one column you must add one of properties of “big-switch” [“flow-rules”].
For example: given a configuration file:
{
"properties": {
"id": {
"type": "string"
},
"description": {
"type": "string"
},
"priority": {
"type": "integer"
},
"match": {
"properties": {
"protocol": {
"type": "string"
},
"dest_port": {
"type": "string"
},
"port_in": {
"type": "string"
}
}
},
"actions": {
"properties": {
"output": {
"type": "string"
}
}
}
}
}To delete a column match:dest_port you must delete "dest_port": {"type": "string"} from json. The result is:
{
"properties": {
"id": {
"type": "string"
},
"description": {
"type": "string"
},
"priority": {
"type": "integer"
},
"match": {
"properties": {
"protocol": {
"type": "string"
},
"port_in": {
"type": "string"
}
}
},
"actions": {
"properties": {
"output": {
"type": "string"
}
}
}
}
}
To add another column to table you (for examle actions:push_vlan) you must add “push_vlan”:{“type”:”string”} to actions. The result is:
{
"properties": {
"id": {
"type": "string"
},
"description": {
"type": "string"
},
"priority": {
"type": "integer"
},
"match": {
"properties": {
"protocol": {
"type": "string"
},
"port_in": {
"type": "string"
}
}
},
"actions": {
"properties": {
"output": {
"type": "string"
},
"push_vlan": {
"type": "string"
}
}
}
}
}